Paper-pasting machine



Patented Oct. 6, 11925.

UNITED STATES PATENT OFFICE.

PAPER-PASTING MACHINE.

Application led August 7, 1922. Serial No. 580,056.

T @ZZ 107mm it may concern Be it known that I, IVILLIAM L. TAYLOR, acitizen of the United States, and a resident of Cincinnati, in thecounty of Hamilton and State of Ohio, have invented certain new anduseful Improvements in Paper-Fasting Machines, of which the following isa full, clear, and exact description, reference being had to theaccompanying drawings, forming l0 part of this specification.

My invention relates to machines for pasting sheets of paper togetherwith an asphalt or like bituminous binder for the purpose ofrmoisture-proofing the paper, and relates more particularly to devicesfor providing lines of non-asphaltic material along the edges or inbands ruiming lengthwise of the pasted web.

The object of providing for these bands is fully set forth in severalco-pending applications of my own, among them. application, Serial No.551,018, led April 10, 1922.

In this application I describe a modified apparatus over the one shownin the drawings of the above noted application having as an object thereducing of the chances of asphalt getting into the selected bands orlines on which it is desired to deposit a stream of cement or otherinterposed stream p not having the tacky consistency of asphalte whichare of value in binding webs of paper together.

I accomplish the object of my invention by thatl certain constructionand arrangement of parts to be hereinafter more specifically pointed outand claimed.

In the drawings,

Figure 1 is a side elevati-on of a set of rolls and tank as used by me,omitting the mountings and driving connections which contain nothingnovel. U

Figure 2 is a perspective view showing the coating roll and one form ofspecial wiper for the grooves thereof.

'Ihe apparatus comprises a storage roll 1 for the one web of paper 2,and the storage roll 3 for the other web of paper 4. The paper, whenpasted, is wound on the roll 5.

I provide the tank 6 containing molten asphalt, in which revolves theroller 7 said roller being so set as to dip in the asphalt bath. Mountedso as to contact with the roller 7 is the coating roller 8.

The paper passes between two rolls 9 and l() 'where .it lis pressedtogether and the web 2 comes from its storagev between the rolls 9 and 8and thence around the roll 9 and between it and the roll 10. The web 4passes through a device for depositing lines or bands of material otherthan tacky asphalt, and thence between the rolls 9 and 10 where it isunited with the web 2. I khave omitted ashowing of the line depositingdevice, as this may be of any type, such as is indicated in myapplication above referred to.

It will be noted that in this device I have removed thecoating roll byone step from the asphalt tank. I find that this is necessary in usingsuch asphalts as will 'give a proper action in binding the webs of papertogether. A two-step removal might be advisa-ble in some cases, itvbeing the principal object to prevent excess of asphalt traveling uparound the roller 7 and getting directly on the paper.k

In the rollers 8 I have forlned grooves 11, and at the ends thereof Ihave formed grooves or cut away portions 12. `'Ihese portions naturallydo not wipe the roller 7 and hence get no direct coating of asphalt fromthe roller 7. The paper web is thus intended to have no asphalt coatingalong lines defined by these grooves or cut away ortions.

I find that I have to use a special wiper in order to insure a properdefinition to the margin line of the asphalt coating at each side of thelines or bands and to prevent considerable coating of the said lines.

I have shown but one wiper and it will be understood that all wiperswill be formed on the same principle. In the form shown there are crosspieces 12a, which lie over the roller 8 along the margins of thegrooves. The pieces 12a may be ears turned 95 out at the top of thetubular scraper to be described below and clean 0H the edges of the rollat a point beyond the contact of the l paper web 2 therewith, asindicated by the arrows of revolution. The pieces 12a im- 100 pingeagainst the surface of the roller along the edges of the grooves and damup the accumulated asphalt thereon, which flows and is drawn 'down intothe grooves to be t'hen scraped away by the lower edge of the 105 troughmouth.

In addition to the scraper I form a trough or tube 13, which is of awidth to lie in the groove, an'd this trough has the part defining thelower edge of its mouth lying in the groove and extending to the basethereof, as at 14. Thus the trough scrapes off all asphalt which may getinto the groove and prevent an accumulation there. This asphalt runsback into the tank through the trough, which may be mounted in the tankas at 15.

It will be noted that without the use of some form of scraper to takeasphalt out of the groove, there will be such an accumulation of asphaltthere as will rapidly fill it up. The roller 8 does not dip in the tank,so that accumulation might wash or melt off, and the asphalt in myexperience fills the grooves even more rapidly because of the action ofthe margin scraper.

The margin scraper is necessary, however, since the flow of asphalt onthe paper is such as to extend across the desired line of non-asphaltcoated nature, and hence the quantityof asphalt along the marginsthereof must be carefully regulated as to accumulation.

The exact construction of the scraper device or of the grooves in theroller are not considered essential by me, and I have ymerely attemptedto show and describe one form thereof.

I-Iaving thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

V1. A mechanism for coating' paper or the like with asphalt or the like,comprising a tank for asphalt, a roll revoluble in a position to dipinto said tank, and at least one additional roll wiping said firstmentioned roll, and adapted to engage a traveling paper web, said rollhaving peripheral grooves so as to form non-asphalted lines on thepaper, and means for wiping the margins of said grooves, and means forwiping the entire grooves so as to prevent accumulation of asphalttherein.

2. A mechanism for coating paper or the like with asphalt or the like,comprising a tank for asphalt, a roll revoluble in a position to dipinto said tank, and at least one additional roll wiping said firstmentioned roll, and adapted to engage a traveling paper web, said rollhaving peripheral ,i

grooves so as to form non-asphalted lines on the paper, and means forwiping the margins of said grooves, and means for wiping the ent-iregrooves so as to prevent accumulation of asphalt therein, said meanscomprising a conduit 'to cause such asphalt to flow back into the tank.

3. A mechanism for coating paper or the like with asphalt or the like,comprising a tank for asphalt, a roll adapted to receiveV WILLIAM L.TAYLOR.

